UseSWIG: fix handling of property `SWIG_MODULE_NAME`
UseSWIG
ignored an eventually set property SWIG_MODLUE_NAME
(due to a typo).
Building multiple python modules using the mentioned property as described
in the docu could lead to an invalid, or even worse, inconsistent build.ninja
file.
The reason is that the generated list of support files was not unique. For each
module the support file was always named the same, namely
path/to/builddir/MODULENAME.py
.
Topic-rename: UseSWIG-handle-SWIG_MODULE_NAME